Wasted votes: Difference between revisions

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RobLa

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Revision as of 04:12, 16 October 2020 (view source) RobLa (talk \| contribs) m (RobLa moved page Wasted Votes to Wasted votes: aligning with Wikipedia ( wikipedia:Wasted votes )) ← Older edit		Latest revision as of 07:47, 9 August 2023 (view source) RobLa (talk \| contribs) (→‎See also: Linking to Exhausted ballot instead of Exhausted choices) Tag: Visual edit: Switched
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Line 1: The concept of a wasted vote is related to [[Vote splitting]] and other similar ~~phenomina~~phenomena. A wasted vote is a vote which does not have the intended effect of voter because its power in tabulation is lost. The definition is not universally agreed upon and is somewhat system dependant. Most commonly the term is used colloquially without intention to imply that there is a strict definition. == Calculating the number of wasted votes in a FPTP election == Line 25: Note that for methods that allow voters to omit preferences between candidates, calculating this metric exactly (footnote 2) requires knowing not just all of the votes used in the election to calculate, but also the preferences of all of the voters casting those votes. This means that this metric is no-longer defined by just the raw votes, as under such methods, multiple elections in which the exact same votes are cast can have different numbers of wasted votes depending on the voters casting those votes. == Wasted votes in weighted-vote multi-winner systems == Some voting systems, like Chamberlin-Courant and [[Evaluative Proportional Representation]], return an assembly (i.e. multiple winners) with each winner having a weight. Each winner has a weighted vote in decisions made by the assembly - a generalization of having an integer number of seats. If each voter's ballot influences the weights of the winners to some slight degree, then it can be argued that no vote is wasted because all of them have an effect on the outcome. However, such changes need not alter the outcomes of the assembly's votes. For instance, if changing a ballot changes the weights in a two-winner assembly from (0.49, 0.51) to (0.48, 0.52), and the assembly uses majority rule, the second winner can force the outcome in both cases. == Footnotes == Line 33 ⟶ 39: ==See also== [[Vote splitting]] [[Exhausted ballot]] [[Category:Voting theory]]